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finlep [7]
3 years ago
6

The entire question is un the picture

Mathematics
1 answer:
irakobra [83]3 years ago
8 0
The intersection of the two equations is (1, 1/5). Since the question is asking for the value of x, x = 1. 
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Jane is 5 times older than her sister. In 3 years, Jane’s sister will be 1/4 her age. Find the ages now
Korolek [52]

The present age of Jane is 45 years old and present age of her sister is 9 years old

<em><u>Solution:</u></em>

Let the present age of Jane be "x"

Let the present age of her sister be "y"

<em><u>Jane is 5 times older than her sister</u></em>

present age of Jane = 5(present age of her sister)

x = 5y ---------- eqn 1

<em><u>In 3 years, Jane’s sister will be 1/4 her age</u></em>

Age of sister after 3 years = 3 + y

Age of jane after 3 years = 3 + x

Age of sister after 3 years = 1/4(age of jane after 3 years)

3 + y = \frac{1}{4}(3 + x)

Substitute eqn 1 in above equation

3 + y = \frac{1}{4}(3 + 5y)\\\\12 + 4y = 3 + 5y\\\\5y - 4y = 12 - 3\\\\y = 9

Substitute y = 9 in eqn 1

x = 5(9)

x = 45

Thus present age of Jane is 45 years old and present age of her sister is 9 years old

3 0
3 years ago
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PtichkaEL [24]

Answer:

B: 1620cm2

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Describe how to use Scientific Notation to write a very large number. Give an example, written in both Standard Form and Scienti
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A short way of writing really large numbers or really small numbers
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Step-by-step explanation:

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CAN SOMEONE HELP ME PLEASE ASAP!
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Answer:

880 feet per hour.

Step-by-step explanation:

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2.2/0.0025 = 880 feet per hour.

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